2007-08-05 16:55:37 · 8 answers · asked by J.D. 3 in Computers & Internet ➔ Hardware ➔ Monitors
Because a computer is actually flashing at 60 frames per second or so, which can't be seen by the naked eye. A camera can see that. That's what the lines are. Frames.
2007-08-05 16:58:16 · answer #1 · answered by bosoxdanc 2 · 0⤊ 0⤋
It's based on the frames per second. A computer and video card has a lower frame per second as say a TV. So the lines you see when a monitor is filmed is the picture refreshing it self. But as you look at it with a naked eye. You don't see that.
2007-08-05 23:59:32 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Your monitor by default updates 60 times per second or 60Hz. Video cameras can detect higher frames rates. If you have a CRT monitor, you can increase the refresh rate to reduce the moving lines.
If you want to film it, it is best to connect your video card directly to a recording device. Then, you will not have any flickering or moving lines.
2007-08-05 23:59:33 · answer #3 · answered by techman2000 6 · 0⤊ 0⤋
Because the frame rate speed on a video camera is different than that of a computer monitor. The speeds don't match, so you see wavy lines going up and down.
Same thing happens if you hum loudly and deeply while looking at a digital clock, or your computer monitor.
2007-08-05 23:58:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i think the camera lens is faster then the human eye so the refresh rate of the monitor can be detected or viewed by the camera just guessing
2007-08-05 23:58:32 · answer #5 · answered by Anonymous · 0⤊ 0⤋
the speed/ refresh rate of the computer monitor and the camera are not the same.
2007-08-05 23:59:47 · answer #6 · answered by momoftwo 3 · 0⤊ 0⤋
Frequency. The frequency of the screen and the frequency of the camera are not syncronized.
2007-08-05 23:59:11 · answer #7 · answered by PatrickBray 3 · 0⤊ 0⤋
it's called a refresh rate. turn it up to as high as u can.
2007-08-06 00:23:43 · answer #8 · answered by agello24 6 · 0⤊ 0⤋